A magnetic separation device for iron-containing substances in the tailings of hydrometallurgy of laterite nickel ore

Abstract

The technical solution of the present invention provides a magnetic separation device for iron-containing substances in the tailings of laterite nickel ore hydrometallurgy, which includes a pipe body, a magnetic separation component, a driving component and a feeding component. The pipe body is used to pour the tailings from its top end, and a plurality of vertical flat holes penetrating the pipe body are opened on the outer side of the pipe body; the magnetic separation component includes an electromagnetic plate and a sliding sleeve. The electromagnetic plate is arranged in the flat hole, and the sliding sleeve is sleeved outside the electromagnetic plate and can reciprocate in the flat hole along the electromagnetic plate. By adopting a vertical pipe body, the present invention pours the tailings in a free-fall manner. The sliding cylinder can reciprocate in the pipe body and always keep a part of it in the pipe body. Under the action of the electromagnetic plate, the iron-containing substances are adsorbed on the part of the sliding cylinder in the pipe body, while the part of the sliding cylinder that moves outside the pipe body is separated from the magnetic adsorption plate area and demagnetized. During the reciprocating movement, the magnetically separated iron-containing substances are taken out of the pipe body and automatically demagnetized and separated.

Description

Technical Field

[0001] The present invention relates to the technical field of tail slag magnetic separation recovery, and particularly to a magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgy tail slag. Background Art

[0002] In the process of producing new energy raw materials of nickel, cobalt and manganese by laterite nickel ore hydrometallurgy, tail slag will be generated. There are iron-containing substances in the tail slag, and the reduction roasting-magnetic separation method is adopted to recover the iron-containing substances from the obtained tail slag.

[0003] In order to improve the magnetic separation efficiency in the magnetic separation step of tail slag, in the prior art, for example, in a magnetic separation device for recovering metals in smelting tail slag with the Chinese patent No. 202211190652.7, a tail slag dispersing assembly is provided, and the tail slag dispersing assembly can cooperate with the electromagnetic selection part to fully select the magnetic metals in the tail slag in the magnetic separation cavity. At the same time, the rotation of the magnetic separation disk can drive the tail slag dispersing assembly to disperse the tail slag, improving the recovery efficiency of magnetic metals. The tail slag is dispersed to be fully magnetically separated to improve the magnetic separation efficiency.

[0004] For the above-mentioned prior art, in order to improve the recovery efficiency of tail slag magnetic separation, the tail slag is dispersed in magnetic separation, which does have obvious effects. However, most magnetic separation devices either convey the tail slag to the magnetic separation part by a conveyor belt for magnetic separation, or inject it into a drum-type magnetic separation device for rolling magnetic separation. The aspects restricting the magnetic separation line efficiency still focus on the speed of the tail slag passing through the magnetic separation part and the transfer speed of the metal and the tail slag after magnetic separation. If it is necessary to match the continuous generation of tail slag in the smelting production line and perform efficient and sufficient tail slag magnetic separation, it is necessary to keep the tail slag passing through quickly and be effectively magnetically separated. Therefore, it is necessary to propose a magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgy tail slag to solve the above problems. Summary of the Invention

[0005] In view of this, it is necessary to provide a magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgy tail slag to solve the technical problem that the magnetic separation efficiency in the prior art is still restricted by the speed of the tail slag passing through the magnetic separation part and the transfer speed of the metal and the tail slag after magnetic separation.

[0006] To achieve the above technical purpose, the technical solution of the present invention provides a magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgy tail slag, including:

[0007] A pipe body for pouring tail slag from its top, and a plurality of vertically-shaped flat holes penetrating the pipe body are opened on the outer side of the pipe body;

[0008] A magnetic separation component, the magnetic separation component includes an electromagnetic plate and a sliding sleeve, the electromagnetic plate is arranged in the flat hole, the sliding sleeve is sleeved outside the electromagnetic plate, and can reciprocate in the flat hole along the electromagnetic plate, and the iron-containing substances are magnetically attracted to the sliding sleeve in the overlapping area between the electromagnetic plate and the sliding sleeve;

[0009] A driving component, used to drive the sliding sleeve to reciprocate in the flat hole; and

[0010] A material guiding component, used to receive the iron-containing substances that the sliding sleeve brings out of the pipe body and fall off magnetically.

[0011] Further, the flat holes are distributed on the left and right sides and the front and back sides of the pipe body, and the flat holes on the front and back sides and the left and right sides are distributed up and down, so that the magnetic separation components located in the flat holes are distributed in a cross shape in the pipe body.

[0012] Further, the number of the flat holes on the front and back sides and the left and right sides of the pipe body is two.

[0013] Further, the shape of the sliding sleeve is U-shaped and is inversely sleeved on the electromagnetic plate. A guiding groove is arranged on the inner side of the sliding sleeve, and a guiding strip is arranged on the outer side of the electromagnetic plate. The guiding strip is slidably connected with the guiding groove and is used to guide the movement of the sliding sleeve along the direction of the electromagnetic plate.

[0014] Further, a group of the magnetic separation components includes several magnetic separation components distributed crosswise up and down, and several groups of magnetic separation components are distributed on the pipe body in sequence from top to bottom.

[0015] Further, the magnetic force of the electromagnetic plates on several groups of the magnetic separation components decreases sequentially from top to bottom, and a material guiding component corresponds to the lower part of each group of magnetic separation components.

[0016] Further, the driving component includes a first bracket, a second bracket, a driving wheel and a fixing bracket. The driving wheel is rotatably connected to the fixing bracket, the fixing bracket is installed on the outer side of the pipe body, the end of the driving wheel is connected to the first bracket, one end of the second bracket is hinged to the first bracket, and the other end of the second bracket is hinged to the corresponding sliding sleeve.

[0017] Further, the driving component further includes a driving motor and a transmission belt. The transmission belt is arranged between two adjacent driving wheels, and the transmission belt is also arranged between the output shaft of the driving motor and the adjacent driving wheel.

[0018] Further, the material guiding component includes a receiving hopper, and the receiving hopper is arranged on the pipe body and surrounds the pipe body for one week.

[0019] Further, the bottom of the material receiving hopper is inclined to one side, and a diversion hopper is arranged at its inclined bottom.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: by adopting a vertical pipe body, the tail slag is poured in by means of free fall. The sliding cylinder is horizontally inserted into the pipe body, and the magnetic attraction plate is suspended in the sliding cylinder. The sliding cylinder can reciprocate in the pipe body and always keep a part inside the pipe body. Under the action of the electromagnetic plate, the iron-containing substances are adsorbed on the part of the sliding cylinder inside the pipe body, while the part of the sliding cylinder outside the pipe body is separated from the magnetic attraction plate area and demagnetized. During the reciprocating movement, the magnetically separated iron-containing substances are taken out of the pipe body and automatically demagnetized and separated. The iron-containing substances can be effectively and quickly magnetically separated. Utilizing the rapid fall of free fall and matching with the structure of multi-segment uninterrupted transfer of iron-containing substances distributed vertically, high-efficiency magnetic separation is carried out. The magnetically separated iron-containing substances are transferred from outside the pipe body, and the tail slag is transferred from the bottom end of the pipe body, achieving the effect that the tail slag passes through the magnetic separation part at a relatively fast speed and is separately transferred, and can be fully magnetically separated with high magnetic separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structure diagram of the magnetic separation equipment for iron-containing substances in the laterite nickel ore hydrometallurgy tail slag according to the embodiment of the present invention;

[0022] Figure 2 is a top view of the magnetic separation equipment for iron-containing substances in the laterite nickel ore hydrometallurgy tail slag according to the embodiment of the present invention;

[0023] Figure 3 is a three-dimensional structure diagram of the magnetic separation part according to the embodiment of the present invention;

[0024] Figure 4 is a front view of the magnetic separation part according to the embodiment of the present invention;

[0025] Figure 5 is an exploded view of the magnetic separation part according to the embodiment of the present invention;

[0026] Figure 6 is a three-dimensional diagram of the multi-layer magnetic separation of the magnetic separation equipment for iron-containing substances in the laterite nickel ore hydrometallurgy tail slag according to the embodiment of the present invention;

[0027] Figure 7 is a schematic structural diagram of the multi-layer magnetic separation of the magnetic separation equipment for iron-containing substances in the laterite nickel ore hydrometallurgy tail slag according to the embodiment of the present invention;

[0028] In the figure: 1. Pipe body; 101. Flat hole; 102. Enclosure;

[0029] 2. Magnetic separation part; 21. Electromagnetic plate; 22. Sliding sleeve;

[0030] 3. driving member; 31. first bracket; 32. second bracket; 33. driving wheel; 34. fixing bracket; 35. transmission belt;

[0031] 4. Material guide; 41. Material receiving hopper; 42. Diversion hopper;

[0032] 100, strong magnetic group; 200, medium magnetic group; 300, weak magnetic group. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] like Figures 1-5 As shown, the present invention provides a magnetic separation device for iron-containing materials in hydrometallurgical tailings of laterite nickel ore, comprising a pipe body 1, a magnetic separator 2, a driving member 3 and a material guide member 4, wherein the pipe body 1 is used to pour tailings from the top thereof, and the tailings are free-falling, so that the tailings are naturally dispersed in the fall, and have a sufficient speed to pass through the magnetic separation part, and provide effective dispersion, which is conducive to magnetic separation in the pipe body 1, sufficient magnetic separation, and improved magnetic separation efficiency, and a plurality of vertical flat holes 101 penetrating the pipe body 1 are opened on the outside of the pipe body 1; the magnetic separator 2 comprises an electromagnetic plate 21 and a sleeve 22, the electromagnetic plate 21 is arranged in the flat hole 101, and the two ends extend from the two ends of the flat hole 101 to the outside of the two sides of the pipe body 1 respectively, the sleeve 22 is sleeved on the outside of the electromagnetic plate 21, and can shuttle back and forth in the flat hole 101 along the electromagnetic plate 21, and the electromagnetic plate 21 is used to pass through the flat hole 101 in the overlapping area with the sleeve 22. The ferrous material is magnetically attracted to the sleeve 22. The sleeve 22 is located in the area inside the tube body 1 and overlaps with the electromagnetic plate 21. The electromagnetic plate 21 has a magnetic attraction force. The ferrous material is magnetized through the sleeve 22 so that it adheres to the outer surface of the sleeve 22. When the sleeve 22 moves from the flat hole 101 to the outside of the tube body 1 and leaves the magnetic attraction area of ​​the electromagnetic plate 21, the ferrous material previously adsorbed is automatically separated to form magnetic separation and separation. The ferrous material is discharged from the outside of the tube body 1 during the magnetic separation, while the tailings fall directly from the tube body 1 and are discharged from the bottom of the tube body 1, thereby achieving rapid magnetic separation and separation. The driving member 3 is used to drive the sleeve 22 to shuttle back and forth in the flat hole 101 and move the sleeve 22 back and forth from the tube body 1. The material guide member 4 is used to receive the ferrous material that is taken out of the tube body 1 by the sleeve 22 and falls away from the magnetic attraction. The magnetically selected ferrous material is directly separated from the tailings and transferred.

[0035] It can be understood that the sliding sleeve 22 corresponding to the flat hole 101 is also flat-shaped, with a larger area on the vertical plane, having more magnetic adsorption area, and when it leaves the magnetic adsorption area of the electromagnetic plate 21, the vertical outer surface is also more likely to drop downward the iron-containing substances adsorbed on its surface before; the driving member 3 can adopt devices with telescopic functions, such as existing devices like telescopic cylinders and electric push rods; the guiding member 4 is mainly arranged outside the pipe body 1, used to receive the iron-containing substances magnetically separated from the pipe body 1 and conduct guiding transportation; the length of the sliding sleeve 22 always completely covers the electromagnetic plate 21 under the telescopic action of the driving member 3.

[0036] In a certain embodiment, in order to have a more effective cutting effect and a sufficient magnetic separation effect during the free fall of the tail slag from the pipe body 1, the flat holes 101 are distributed on the left and right sides and the front and back sides of the pipe body 1, and the flat holes 101 on the front and back sides and the left and right sides are arranged vertically, making the magnetic separation members 2 located in the flat holes 101 distributed in a cross shape inside the pipe body 1, that is, inside the pipe body 1, from top to bottom, one horizontal and one vertical. The horizontally arranged layer of magnetic separation members 2 are all horizontally arranged in parallel, and the vertically arranged layer of magnetic separation members 2 are all vertically arranged in parallel. During the fall of the tail slag, it will be cut by the sliding sleeve 22 in a horizontal and vertical manner. The first effect is that it can further disperse the tail slag, and the second effect is that it can stagger the distribution of the magnetic separation members 2, making the magnetic separation areas cooperate dispersedly, and being able to contact the tail slag more fully for magnetic separation.

[0037] Furthermore, in order to form a relatively sufficient magnetic separation and cutting and dispersing effect, the number of the flat holes 101 on the front and back sides and the left and right sides of the pipe body 1 is two each. Refer to Figure 2 to form a specific cross-shaped cutting and dispersing structure of the magnetic separation members 2 in the falling channel of the tail slag, so as not to cut the pipe body 1 too thin and cause tail slag blockage, and also be able to have an effective cutting and dispersing effect, and its magnetic adsorption surface has four sides on the upper layer and four sides on the lower layer, and can fully contact the tail slag and perform magnetic separation.

[0038] Furthermore, in order to have stable guiding during the reciprocating movement of the sliding sleeve 22, the shape of the sliding sleeve 22 is U-shaped and is sleeved on the electromagnetic plate 21 in an inverted manner, so that magnetic separation adsorption can be carried out on both sides of the electromagnetic plate 21. A guiding groove is opened on the inner side of the sliding sleeve 22, and a guiding strip is arranged on the outer side of the electromagnetic plate 21. The guiding strip is slidably connected with the guiding groove and is used to guide the movement of the sliding sleeve 22 along the direction of the electromagnetic plate 21. Through the cooperation of the guiding strip and the guiding groove, stable sliding of the sliding sleeve 22 is provided and its moving direction is restricted, so that it will not move in the up and down directions.

[0039] It can be understood that there can be two guiding bars on an electromagnetic plate 21, and the two guiding bars are respectively distributed on both sides of the electromagnetic plate 21. The corresponding guiding grooves are opened on the left and right side walls of the sliding sleeve 22. The symmetrically distributed guiding structure has higher stability.

[0040] In a certain embodiment, in order to avoid magnetic separation loopholes and enable full magnetic separation, refer to Figure 6 and Figure 7 , a group of the magnetic separation components 2 includes several of the magnetic separation components 2 distributed in an up-and-down cross manner. Several groups of the magnetic separation components 2 are sequentially distributed on the pipe body 1 from top to bottom. According to actual requirements and the quality required for magnetic separation, multiple groups of magnetic separation components 2 can be set as needed for magnetic separation, and in an interleaved distribution manner, they are in full contact with the tail slag for magnetic separation.

[0041] It can be understood that in this mode, the magnetic separation components 2 are distributed up and down. The interleaving angle between the upper and lower layers of magnetic separation components 2 is not necessarily 90 degrees and can vary adaptively. However, the magnetic separation components 2 in a single layer are all arranged in parallel to avoid interference in stretching.

[0042] Furthermore, since there are also iron-containing substances with different particle sizes in the tail slag, if screening is required, after magnetic separation, an additional process and corresponding screening equipment are needed to perform the screening operation on the iron-containing substances magnetically separated, which affects the efficiency of the entire production line. Therefore, in order to simultaneously perform size screening on the iron-containing substances during magnetic separation, it will undoubtedly greatly improve the efficiency of the entire tail slag recovery process. To achieve the above effects, specifically, the magnetic force of the electromagnetic plates 21 on several groups of the magnetic separation components 2 decreases sequentially from top to bottom, and a corresponding guiding component 4 is provided below each group of the magnetic separation components 2. Thus, each group of magnetic separation components 2 adsorbs iron-containing substances with different particle sizes with different magnetic force magnitudes and discharges them from the corresponding guiding components 4 respectively. During magnetic separation, preliminary screening of the iron-containing substances is performed, saving the subsequent screening link and improving the efficiency of the recovery production line. Moreover, multiple groups of magnetic separation components 2 distributed sequentially from top to bottom can also achieve the effect of full magnetic separation.

[0043] Preferably, the number of groups of the magnetic separation components 2 is three, which are the strong magnetic group 100, the medium magnetic group 200, and the weak magnetic group 300 from top to bottom.

[0044] In addition, in order to prevent the tail slag from popping out from the flat holes 101, a baffle 102 is further provided inside the pipe body 1 for guiding the tail slag near the inner wall to the central area of the pipe body 1.

[0045] In one embodiment, in order to synchronously drive a plurality of magnetic separation members 2, the driving member 3 includes a first bracket 31, a second bracket 32, a driving wheel 33 and a fixing bracket 34. The driving wheel 33 is rotatably connected to the fixing bracket 34, and the fixing bracket 34 is installed outside the pipe body 1. The end of the driving wheel 33 is connected to the first bracket 31. One end of the second bracket 32 is hinged to the first bracket 31, and the other end of the second bracket 32 is hinged to the corresponding sliding sleeve 22. By rotating the driving wheel 33, the first bracket 31 is driven to rotate, and the second bracket 32 is linked to push and pull the sliding sleeve 22, forming an effect that the sliding sleeve 22 linearly expands and contracts along the electromagnetic plate 21 in the flat hole 101.

[0046] Furthermore, the driving member 3 further includes a driving motor and a transmission belt 35. The transmission belt 35 is arranged between two adjacent driving wheels 33, and the transmission belt 35 is also arranged between the output shaft of the driving motor and the adjacent driving wheel 33. The driving wheels 33 of the upper and lower magnetic separation members 2 are driven by the transmission belt 35, and all the magnetic separation members 2 on one side can be driven by one driving motor, saving costs.

[0047] In one embodiment, in order to collect and convey the iron-containing substances separated by magnetic separation, the guiding member 4 includes a receiving hopper 41. The receiving hopper 41 is arranged on the pipe body 1 and surrounds the pipe body 1 for one week, so as to collect the iron-containing substances separated by magnetic separation from all around and falling down.

[0048] Furthermore, the bottom of the receiving hopper 41 is inclined to one side, and a diversion hopper 42 is arranged at the inclined bottom. By means of the inclination of the bottom, the iron-containing substances are slid to the diversion hopper 42 along the inclination degree, and the outlet of the diversion hopper 42 is connected to a conveyor belt for transfer.

[0049] The specific working process of the present invention: The tailings are injected from the top end of the pipe body 1. Driven by the driving motor, the transmission belt 35 is used for transmission. The driving wheel 33 drives the first bracket 31 and the second bracket 32 to linearly reciprocate and push and pull the sliding sleeve 22, so that it reciprocates along the flat hole 101 in the pipe body 1, taking out the iron-containing substances adsorbed on the surface of the electromagnetic plate 21 to the sliding sleeve 22 and separating them outside the pipe body 1. They are collected by the receiving hopper 41 and conveyed to the conveyor belt by the diversion hopper 42, while the tailings are directly discharged from the bottom end of the pipe body 1 and conveyed by another conveyor belt; if there are multiple groups of magnetic separation members 2 with different magnetic adsorption intensities, the corresponding receiving hoppers 41 are respectively guided to the diversion hoppers 42 thereon, and the iron-containing substances with different particle sizes of magnetic separation screening are respectively conveyed by the corresponding conveyor belts, and the size screening of the iron-containing substances is carried out while magnetic separation.

[0050] The entire workflow is completed, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0051] As described above, only the preferred specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A magnetic separation device for iron-containing substances in the tailings of hydrometallurgy of laterite nickel ore, characterized in that, Comprising: A pipe body for pouring tailings from its top end, and a plurality of vertically-shaped flat holes penetrating the pipe body are provided on the outer side of the pipe body; A magnetic separation component, the magnetic separation component includes an electromagnetic plate and a sliding sleeve, the electromagnetic plate is arranged in the flat hole, the sliding sleeve is sleeved outside the electromagnetic plate, and can reciprocate in the flat hole along the electromagnetic plate, and the iron-containing substances are magnetically attracted to the sliding sleeve in the overlapping area between the electromagnetic plate and the sliding sleeve; a group of the magnetic separation components includes a plurality of the magnetic separation components distributed crosswise up and down, and several groups of the magnetic separation components are sequentially distributed on the pipe body from top to bottom; the magnetic force of the electromagnetic plates on several groups of the magnetic separation components decreases sequentially from top to bottom; A driving component for driving the sliding sleeve to reciprocate in the flat hole; And A material guiding component for receiving the iron-containing substances taken out of the pipe body by the sliding sleeve and falling off magnetically, and one material guiding component corresponds to each group of the magnetic separation components below.

2. The ferromagnetic separation equipment for iron-containing substances in the laterite nickel ore hydrometallurgy tailings according to claim 1, characterized in that, The flat holes are distributed on the left and right sides and the front and back sides of the pipe body, and the flat holes on the front and back sides and the left and right sides are distributed up and down, so that the magnetic separation components located in the flat holes are distributed crosswise in the pipe body.

3. The ferromagnetic separation device for iron-containing substances in the laterite nickel ore hydrometallurgy tailings according to claim 2, wherein The number of the flat holes on the front and back sides and the left and right sides of the pipe body is two each.

4. The ferromagnetic separation device for iron-containing substances in the laterite nickel ore hydrometallurgy tailings according to claim 3, characterized in that, The shape of the sliding sleeve is U-shaped and is sleeved on the electromagnetic plate in an inverted manner. A guiding groove is provided on the inner side of the sliding sleeve, and a guiding strip is arranged on the outer side of the electromagnetic plate. The guiding strip is slidably connected with the guiding groove for guiding the movement of the sliding sleeve along the direction of the electromagnetic plate.

5. The ferromagnetic separation equipment for iron-containing substances in the laterite nickel ore hydrometallurgy tailings according to claim 1, characterized in that, The driving component includes a first bracket, a second bracket, a driving wheel and a fixing bracket. The driving wheel is rotatably connected to the fixing bracket, the fixing bracket is installed on the outer side of the pipe body, the end of the driving wheel is connected to the first bracket, one end of the second bracket is hinged to the first bracket, and the other end of the second bracket is hinged to the corresponding sliding sleeve.

6. The ferromagnetic separation device for iron-containing substances in the laterite nickel ore hydrometallurgy tailings according to claim 5, wherein The driving component further includes a driving motor and a transmission belt. The transmission belt is arranged between two adjacent driving wheels, and the transmission belt is also arranged between the output shaft of the driving motor and the adjacent driving wheel.

7. The ferromagnetic separation equipment for iron-containing substances in the laterite nickel ore hydrometallurgy tailings according to claim 1, characterized in that, The material guiding component includes a receiving hopper, and the receiving hopper is arranged on the pipe body and surrounds the pipe body for one week.

8. The ferromagnetic separation device for iron-containing substances in the laterite nickel ore hydrometallurgy tailings according to claim 7, wherein, The bottom of the receiving hopper is inclined to one side, and a diversion hopper is arranged at its inclined bottom.

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